68 lines
2.1 KiB
C#
68 lines
2.1 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System.Linq;
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namespace OpenRA.Mods.Common.Traits
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{
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[Desc("This actor blocks bullets and missiles with 'Blockable' property.")]
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public class BlocksProjectilesInfo : ConditionalTraitInfo, IBlocksProjectilesInfo
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{
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public readonly WDist Height = WDist.FromCells(1);
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public override object Create(ActorInitializer init) { return new BlocksProjectiles(init.Self, this); }
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}
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public class BlocksProjectiles : ConditionalTrait<BlocksProjectilesInfo>, IBlocksProjectiles
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{
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public BlocksProjectiles(Actor self, BlocksProjectilesInfo info)
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: base(info) { }
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WDist IBlocksProjectiles.BlockingHeight { get { return Info.Height; } }
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public static bool AnyBlockingActorAt(World world, WPos pos)
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{
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var dat = world.Map.DistanceAboveTerrain(pos);
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return world.ActorMap.GetActorsAt(world.Map.CellContaining(pos))
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.Any(a => a.TraitsImplementing<IBlocksProjectiles>()
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.Where(t => t.BlockingHeight > dat)
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.Any(Exts.IsTraitEnabled));
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}
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public static bool AnyBlockingActorsBetween(World world, WPos start, WPos end, WDist width, out WPos hit)
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{
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var actors = world.FindBlockingActorsOnLine(start, end, width);
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var length = (end - start).Length;
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foreach (var a in actors)
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{
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var blockers = a.TraitsImplementing<IBlocksProjectiles>()
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.Where(Exts.IsTraitEnabled).ToList();
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if (!blockers.Any())
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continue;
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var hitPos = WorldExtensions.MinimumPointLineProjection(start, end, a.CenterPosition);
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var dat = world.Map.DistanceAboveTerrain(hitPos);
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if ((hitPos - start).Length < length && blockers.Any(t => t.BlockingHeight > dat))
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{
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hit = hitPos;
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return true;
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}
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}
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hit = WPos.Zero;
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return false;
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}
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}
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}
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